In this universe there is no such thing as “faster-than-light” travel. The speed of light is not only a good idea, it’s the law. You can’t get to it; the closer you accelerate toward it, the more energy you need to keep going toward, and it’s a horrible idea to go that fast anyway, since space is only mostly empty, and anything you collide with at an appreciable percentage of the speed of light is going to turn your fragile spaceship into explody chunks of metal. And it would still take years, or decades, or centuries, for the wreckage of your spacecraft to zoom past wherever it was you originally planned to go.

There is no faster-than-light travel. But there is the Flow.

The Flow, generally described to laypeople as the river of alternate space-time that makes faster-than-light travel possible across the Holy Empire of the Interdependent States and Mercantile Guilds, called “the Interdependency” for short. The Flow, accessible by “shoals” created when the gravity of stars and planets interacts just right with the Flow, to allow ships to slip in and ride the current to another star. The Flow, which ensured the survival of humanity after it had lost the Earth, by allowing trade to thrive between the Interdependency, assuring that every human outpost would have the resources they’d need to survive—resources that almost none of them would have had on their own.

This was, of course, an absurd way of looking at the Flow. The Flow is not anything close to a river—it is a multidimensional brane-like metacosmological structure that intersects with local time-space in a topographically complex manner, influenced partially and chaotically but not primarily by gravity, in which the ships accessing it don’t move in any traditional sense but merely take advantage of its vectoral nature, relative to local space-time, which, unbounded by our universe’s laws regarding speed, velocity, and energy, gives the appearance of faster-than-light travel to local observers.

And even that was a crap way of describing it, because human languages are crap at describing things more complex than assembling a tree house. The accurate way of describing the Flow involved the sort of high-order math probably only a couple hundred human beings across the billions of the Interdependency could understand, much less themselves use to describe it meaningfully. You likely would not be one of them. Nor, for that matter, would Captain Gineos or Executive Officer Inverr.